638414 has 16 divisors (see below), whose sum is σ = 1130496. Its totient is φ = 264600.

The previous prime is 638371. The next prime is 638423. The reversal of 638414 is 414836.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302 + ... + 1169.

It is an arithmetic number, because the mean of its divisors is an integer number (70656).

2⁶³⁸⁴¹⁴ is an apocalyptic number.

638414 is a deficient number, since it is larger than the sum of its proper divisors (492082).

638414 is a wasteful number, since it uses less digits than its factorization.

638414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511.

The product of its digits is 2304, while the sum is 26.

The square root of 638414 is about 799.0081351275. The cubic root of 638414 is about 86.1061426046.

The spelling of 638414 in words is "six hundred thirty-eight thousand, four hundred fourteen".